The Application and Efficacy of Voice Therapy and Closed Reduction Under Local Anesthesia Combination for Arytenoid Dislocation.

Objective: To explore the efficacy of voice therapy combined with closed reduction under local anesthesia upon arytenoid dislocation (AD) and to provide new reference for the clinical treatment of AD.

Methods: Fifty-eight patients diagnosed with unilateral AD were enrolled in the study, which were divided into the closed reduction group under local anesthesia alone (25 cases) and the closed reduction group under local anesthesia combined with voice therapy (33 cases) according to the treatment regimen. The vocal cord movements of the two groups were observed under laryngoscopy before and after treatment. Fundamental frequency (F0), fundamental frequency perturbation (Jitter), amplitude perturbation (Shimmer), and harmonic noise ratio (HNR) of the two groups before and after treatment were analyzed. Maximum vocal time (MPT) and simplified Voice Disturbance Index Scale (VHI-10) scores were obtained.

Results: After treatment, the redness and swelling around the affected AD of all patients were improved by an electronic dynamic laryngoscope, and the movement of vocal cords and mucosal waves were improved to diverse degrees. After treatment, F0, Jitter, Shimmer, and HNR in both groups were lower than before treatment, and MPT values were higher than before treatment, and the differences before and after treatment were statistically significant (P < 0.05), and the score of VHI-10 in both groups was lower than before treatment (P < 0.05). Patients in the closed reduction group under local anesthesia combined with voice therapy revealed better outcome over those in the closed reduction group under local anesthesia alone (P < 0.05).

Conclusions: The effect of voice therapy combined with closed reduction under local anesthesia was better than that of closed reduction alone upon AD.